The Plexidor PDEWALLLGWH White Wall Mount Electronic Pet Door Unit - Large uses a hardened ABS panel that slides effortlessly up and down like a mini electronic garage door. Using state-of-the-art RFID technology, the sensor of the Plexidor PDEWALLLGWH is able to read a pre-programmed collar key code that opens and closes the pet door automatically for your pet only while keeping other animals outside or your other pets inside. The Plexidor PDEWALLLGWH Electronic Pet Door plugs into a standard household outlet or can be hardwired to your existing electrical panel. Easy to program and even easier to use, the Plexidor PDEWALLLGWH Electronic Pet Door will provide years of enjoyment for your family and pet. Features: * PDEWALLLGWH unit is specifically designed for brick, block or cement walls that measure up to 12-inches thick * Inactive unit uses a hardened ABS panel that acts as a security door keeping out unwanted quests * Collar key is waterproof, requires no batteries, active 24/7, snaps onto your pets collar * One touch programming, easy to add or change over 1,000 different codes * Collar Key code opens and closes the door automatically for your pet only * Door is always securely locked with stainless steel rod when not active * Won’t interfere with underground fence or home security systems * Runs on household current and can be plugged in or hard wired * Set the timing of how long the door remains open * Pet and child safe - won’t close when obstructed * Perfect for animals that weigh up to 125 pounds * Cut Hole of 14-1/4-inch wide x 23-inch high * Interior Frame Overall: 17-1/8-inch wide x 54-5/8-inch high * Exteriror Frame Overall 17-inch wide x 26-inch high * Opening of 12-3/4-inch wide x 20-inch high * Security with lock, key and/or steel security plate * No replacement flaps required * Highest energy efficiency What"s In The Box: * Plexidor PDEWALLLGWH White Interior and Exterior Frame * Two Collar Key Pendants * Aluminum Tunnel Pieces * Installation Instructions * Mounting Hardware * Manual